21521388

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2153}}^1$

素因数の和:2191

約数の個数: 72

約数和(自身を含む): 61880112

約数和(自身を除く): 40358724

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 49, 51, 68, 84, 98, 102, 119, 147, 196, 204, 238, 294, 357, 476, 588, 714, 833, 1428, 1666, 2153, 2499, 3332, 4306, 4998, 6459, 8612, 9996, 12918, 15071, 25836, 30142, 36601, 45213, 60284, 73202, 90426, 105497, 109803, 146404, 180852, 210994, 219606, 256207, 316491, 421988, 439212, 512414, 632982, 768621, 1024828, 1265964, 1537242, 1793449, 3074484, 3586898, 5380347, 7173796, 10760694, 21521388]

約数ペア:

[(1, 21521388), (2, 10760694), (3, 7173796), (4, 5380347), (6, 3586898), (7, 3074484), (12, 1793449), (14, 1537242), (17, 1265964), (21, 1024828), (28, 768621), (34, 632982), (42, 512414), (49, 439212), (51, 421988), (68, 316491), (84, 256207), (98, 219606), (102, 210994), (119, 180852), (147, 146404), (196, 109803), (204, 105497), (238, 90426), (294, 73202), (357, 60284), (476, 45213), (588, 36601), (714, 30142), (833, 25836), (1428, 15071), (1666, 12918), (2153, 9996), (2499, 8612), (3332, 6459), (4306, 4998)]